code: def setUpClass(cls):
      ray.init()
  
file_path: ray/rllib_contrib/crr/tests/test_crr.py
imports: import unittest
  from rllib_crr.crr import CRRConfig
  import ray
  from ray.rllib.utils.framework import try_import_torch
  from ray.rllib.utils.test_utils import check_compute_single_action, check_train_results
label_desc: Use image node_id 1 for calling the TestCRR obj's underlying member method code with example usage: obj.setUpClass(cls) without return types